Another feature of the investment casting method of robot stainless steel parts is that it can also cast various aluminum alloy castings, and it can also cast heat-resistant steel castings. For example, the leaf of a piston engine, its streamlined outer profile and water cooling inner wall, basically cannot be produced by mechanical processing technology. Production and manufacturing with investment casting technology can not only achieve mass production and processing, it confirms the unity of castings, and prevents the stress of residual knife marks after hardware processing.

The precision of investment casting specifications is relatively high, usually reaching CT4-6 (CT10~12 for sand casting and CT5~7 for aluminum die casting). Perhaps because the entire process of investment casting is complicated, the factors that endanger the precision of casting specifications are relatively high. Many, such as the shrinking of the mold material, the deformation of the investment mold, the linear transformation of the shell in the whole process of heating and water cooling, the shrinkage rate of aluminum alloy and the deformation of the casting during the whole process of solidification, etc., so the general investment Although the precision of the specifications of the castings is relatively high, its uniformity still needs to be improved (the uniformity of the specifications of the castings using medium and high temperature wax materials should be improved a lot).

When Dongguan Precision Casting suppresses the investment, it chooses a profiled plate with a high smoothness of the surface of the concave mold, so the surface of the investment is also relatively smooth. In addition, the shell is made of a unique heat-resistant adhesive and a fire-resistant building paint configured by a fire-resistant insulation material, which is coated on the investment mold, and the surface smoothness of the concave mold that immediately touches the molten metal material high. Therefore, the surface smoothness of investment castings is higher than that of ordinary iron castings, usually reaching Ra.1.6~4.3μm.

The greater feature of investment casting is that because investment castings have high specification precision and surface smoothness, it can reduce the hardware processing work, only leaving a small amount of machining allowance at a higher position on the parts. , And even some castings only leave grinding and polishing capacity, and can be applied without hardware processing. The reason is that the choice of investment casting method can save a lot of mechanical equipment and comprehensive man-hours of production and processing, and greatly save the raw materials of Dongguan precision casting metal materials.